Coal-chute lock



July 1, 1930. ,CHEVERIE ET! AL 1,769,875

COAL CHUTE LOCK Filed Aug. 24, 1927 2 Sheets-Sheet 1 2 h wdj, Z

ATTORN EY July 1, 1930.

M. CHEYERIE ET AL GOAL CHUTE LOCK Filed Aug. 24, 1927 2 Sheets-Sheet 2 Afar/zeal ("/zeaerze 71 222541225 film/2'03 lNvENToRS ATTORNEY Patented July 1,

* TES sareri COAL-CHUTE' LOCK Application filed August 24, 1927. Serial No. 215,200.

This invention relates to a lock for the doors of coal chutes and the like, the general object of the invention being to provide a simple lock which can be operated by a key from the exterior of the door as well as the interior thereof, with means located on the interior face of the door for preventing releasing of the lock by the key until such interior means have been moved to releasing position.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing our invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a viewof the interior part of a door and portion of its frame, showing the invention in use.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 is a section on line 33 of Figure 1.

Figure 1 is a section on line 44 of Figure 1.

Figure 5 is a view of the key.

Figure 6 is a section on line 6-6 of Figure 3. c

Figure 7 is a view of the locking pin.

. In these views, A indicates the frame and B the door of a coal chute and 1 indicates a supporting member formed with or connected to the lower edge of the door and which is formed with a socket 2 with which communiv cates a keyhole 3 formed in the door. The hub i of a pinion 5 is rotatably held in the socket by means of a screw 6 engaging an an nular groove '4" formed in the hub and this hub and pinion have a-key receiving hole so that a key, such asshown at 8, may be passed through the hole 3 into the hole 9 of the hub and pinion to rotate the pinion from the exterior of the door By placing the key in the hole 9, the pinion can be rotated from the interior of the door. A toothed segment 10 is, rotatably connected with the memberl by means of the bolt 11 and the tooth part of this segment meshes with the pinion and the lower end of the segment forms a latch 12 for engaging akeeper member 13 formed on the sill of the frame A. A stoppin 14c limits theunovement ofthe latch 12 in one directioniand a pin 15, slidably mountedin a hole 16 which passes through the door and themember 1,.is designed to prevent movement'of the latch in the opposite direction. By pushing this pin toward the exterior of the door, however, the latch is. free to be swung to disengage it from the keeper member so that the door can be opened. A locking rod 17, provided with a handle 18, is normally pressed by a spring 19 into a groove 20 formed in the pin 15 to hold the pin in looking position, but by pulling this rod outwardly by its handle, the pin can be pushed toward the exterior of the door and, then by turning the pinion by the key, the segment will be rocked on its pivot so as to disengage the latch 12 from the keeper member 13 so that the door can be opened.

From the foregoing it will be seen that we have provided a simple form of lock which can be moved to releasing position from the exterior of the door by a key after the looking pin has been moved to inoperative position from the interior of the door. It will also be seen that the pin can be moved to locklng position from the exterior of the door so that the door can be locked from the a toothed segment pivotally supported on the member and having its teeth meshing with the pinion, a latch forming pro] ection on the segment, a pin for preventing movement of the projection in one direction and a locking in elidably mounted in the supporting memr for preventing movement of the projec- 5 tion in an opposite direction when the pin is in operative position and means for locking the pinin operative position.

2. A look of the class described comprising a carrying member a pinion rotatably supm ported thereby, a key for turning the pinion,

a toothed se ent pivotally supported on the member and liavin its teeth meshing with the pinion, a latch orming projection on the segment, a pin for preventing movement of m the projection in one direction, a locking pin slidebly mounted in the su porting member fompneventing movement 0 the projection in in opposite direction when the pin is in oporative position, a, spring pressed hand op- 30 era-ted member movably supported in the supmember and the locking pin having agroove therein with which the locking memiilherengeges to hold the pin in locking posion. v 5 "In testimony whereof we aflix our signatures.

MICHAEL CHEVERIE.

WILLIAM H. ETHERIDGE. 

